CN205929937U - Double -sided blackboard brush - Google Patents

Abstract

The utility model relates to the field of teaching appliances, in particular to a double-sided blackboard brush, which is characterized in that it includes a brush body, bristles, a brush cover, a handle, and an anti-skid cover; The diameters of the surfaces are equal, and the diameter of the cross-sectional circle at the vertical center of the brush body is greater than the diameter of the circular surfaces at the left and right ends of the brush body. The brush body is symmetrically provided with bristles on the circular surfaces at the left and right ends of the brush body, and the curved surface wall of the brush body is close to the left and right ends. The edge position of the circular surface is provided with external threads along the circumference of the curved surface; the brush cover is in the shape of a hollow cylinder, the circular surface of one side of the brush cover is open and penetrates with the hollow area in the brush cover, and the circular surface of the other side of the brush cover is closed. An internal thread is provided along the circumference of the inner wall of the hollow cylinder of the brush cover at one end close to the opening of the brush cover. The utility model prolongs the service life of the blackboard brush, and in addition, when people vibrate and clean up the accumulated chalk dust on the bristles, it can effectively avoid the phenomenon that the chalk dust that falls down flutters around.

Description

A double-sided blackboard brush

【Technical field】

The utility model relates to the field of teaching appliances, in particular to a double-sided blackboard brush.

【Background technique】

The blackboard brush is a kind of teaching tool commonly used in people’s daily study and work. The traditional blackboard brush only has bristles on one side. At this time, people often choose to discard the old blackboard brush and replace it with a new one. The service life of the blackboard brush is short. In addition, when the chalk dust on the bristles of the blackboard brush accumulates to a certain extent, people tend to shake it directly The way of blackboard brush bristles is used to make the chalk dust on the bristles fall so that it can be used again, and when people vibrate the blackboard brush bristles, the chalk dust falling from the bristles tends to fly around, and the dust phenomenon is serious. Chalk dust will not only fall on people and stain people's clothes, but also be easily inhaled by people through the nasal cavity, and then cause harm to people's health.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a double-sided blackboard brush, which is provided with double-sided bristles to prolong the service life of the blackboard brush. In addition, when people vibrate and clean the accumulated chalk dust on the bristles, it can effectively avoid falling The phenomenon that the chalk dust that comes down is flying around, and also has the function of collecting chalk dust.

In order to achieve the above purpose, the technical solution provided by the utility model is: a double-sided blackboard brush, which is characterized in that it includes a brush body, bristles, brush cover, handle, and anti-slip cover; the brush body is horizontally cylindrical, and the brush body The diameters of the circular surfaces at the left and right ends are equal, and the diameter of the cross-sectional circle at the vertical center of the brush body is greater than the diameter of the circular surfaces at the left and right ends of the brush body, and bristles are symmetrically arranged on the circular surfaces of the left and right ends of the brush body. The edges of the round surfaces near the left and right ends are provided with external threads along the circumference of the curved surface; the brush cover is in the shape of a hollow cylinder. The circular surface is closed, and the end of the circular surface opening close to the brush cover is provided with internal threads along the inner wall circumference of the hollow cylinder of the brush cover, and an arc-shaped cylindrical rod handle is fixed on the outside of the center of the closed circular surface of the brush cover. There is a soft anti-slip cover, and hemispherical anti-slip protrusions are arranged on the outer curved surface of the anti-slip cover.

Further, there are two brush covers, and the two brush covers are respectively rotated and engaged with the external threads on the curved wall of the brush body near the edges of the circular surfaces at the left and right ends through the internal thread at the opening of the circular surface of the brush cover; the brush cover and After the brush body rotates and occludes, the distance between the outer edge of the bristles on the circular surfaces at both ends of the brush body and the inner circular surface of the corresponding brush cover is 2-4 cm.

The beneficial effects of the utility model are: the utility model is provided with double-sided bristles, which prolongs the service life of the blackboard brush. In addition, when people vibrate and clean up the chalk dust accumulated on the bristles, it can effectively avoid the chalk dust flying around. occurrence, but also has the function of collecting chalk dust.

【Description of drawings】

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a front structural schematic diagram of the utility model.

Fig. 2 is a front structural schematic diagram of the brush body and bristles of the present invention.

Fig. 3 is a front structural schematic diagram of the brush cover of the present invention.

Fig. 4 is a right view structure diagram of the brush body and bristles of the present invention.

Fig. 5 is a right view structure schematic diagram of the brush cover of the present utility model.

Fig. 6 is a schematic diagram of the state of the utility model in use.

Among them, 1-brush body, 2-bristle, 3-brush cover, 4-handle, 5-anti-slip sleeve, 6-external thread, 7-internal thread.

【detailed description】

In the example shown in the accompanying drawings, a double-sided blackboard brush is characterized in that it includes a brush body, bristles, a brush cover, a handle, and an anti-slip sleeve; the brush body is horizontally cylindrical, and the left and right ends of the brush body have circular The diameters are equal, and the diameter of the cross-sectional circle at the vertical center of the brush body is greater than the diameter of the circular surfaces at the left and right ends of the brush body, and bristles are symmetrically arranged on the circular surfaces at the left and right ends of the brush body. The edge of the surface is provided with external threads along the circumference of the curved surface; the brush cover is in the shape of a hollow cylinder, the circular surface on one side of the brush cover is open and connected with the hollow area inside the brush cover, the other side of the brush cover is closed, close to One end of the opening of the round surface of the brush cover is provided with an internal thread along the circumference of the inner wall of the hollow cylinder of the brush cover, and an arc-shaped cylindrical rod handle is fixed on the outside of the center of the closed circular surface of the brush cover, and a soft non-slip handle is set on the handle. The outer surface of the anti-slip sleeve is provided with hemispherical anti-slip protrusions.

Further, there are two brush covers, and the two brush covers are respectively rotated and engaged with the external threads on the curved wall of the brush body near the edges of the circular surfaces at the left and right ends through the internal thread at the opening of the circular surface of the brush cover; the brush cover and After the brush body rotates and occludes, the distance between the outer edge of the bristles on the circular surfaces at both ends of the brush body and the inner circular surface of the corresponding brush cover is 2-4 cm.

Before using the utility model to wipe the blackboard, people first manually disassemble and separate any one of the brush covers that are rotated and engaged on the brush body from the brush body through rotation, exposing the bristles on the round surface at one end (see Figure 6), and then people You can hold the handle anti-slip cover on the other brush cover to wipe the chalk writing on the blackboard. The anti-slip protrusions on the anti-slip cover are convenient for people to hold the handle and wipe the blackboard. When the wiping effect is not good due to bending due to long-term use, people can re-engage the previously dismantled brush cover and install it on the brush body, and at the same time rotate and remove the other brush cover from the brush body. Then you can use the newly dismantled bristles on the round surface to wipe the blackboard, prolonging the service life of the blackboard brush. In addition, when people clean up the chalk dust accumulated on the bristles, they can re-rotate the dismantled brush cover to be cleaned At this time, the brush cover separates the bristles from the outside. When the bristles are tapped, the chalk dust that falls will not fly around, and can be collected on the outer edge of the bristles and the brush. In the cavity region between the inner sides of the cap circle.

Claims (2)

1. a kind of Dual-side blackboard brush is it is characterised in that it includes brush body, bristle, brush lid, handle, Anti-slip cover；Described brush body is in water Flat round column, the equal diameters of two ends disc about brush body, and the section circular diameter of the vertical center of brush body are more than about brush body The diameter of two ends disc, two ends disc about brush body is all arranged with bristle, near left and right two ends disc on brush body curved wall Marginal position be provided with external screw thread along curved surface circumference；Described brush lid be in hollow cylindrical, the disc upper shed of brush lid side and with brush Hollow area insertion in lid, brush lid opposite side disc is closed, along brush lid hollow cylinder at the disc open at one end of brush lid Medial wall circumference be provided with female thread, the disc center outside of brush lid closing is fixed with curved cylindrical bar handle, handss One soft Anti-slip cover is cased with handle, outside Anti-slip cover, curved surface is provided with hemispherical anti-skid bulge.

2. it is characterised in that described brush is stamped two, two brush lids pass through a kind of Dual-side blackboard brush according to claim 1 Female thread at brush lid disc opening is revolved respectively with the external screw thread at close left and right two ends disc marginal position on brush body curved wall Turn occlusion to be connected；After brush lid and brush body rotating clutch, outside the bristle on the disc of brush body two ends, end margin is inside corresponding brush lid The distance of disc is 2～4cm.